CN207911076U - A kind of lamps and lanterns gradually bright driving circuit - Google Patents
A kind of lamps and lanterns gradually bright driving circuit Download PDFInfo
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- CN207911076U CN207911076U CN201820191512.4U CN201820191512U CN207911076U CN 207911076 U CN207911076 U CN 207911076U CN 201820191512 U CN201820191512 U CN 201820191512U CN 207911076 U CN207911076 U CN 207911076U
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- 241001465382 Physalis alkekengi Species 0.000 title claims abstract description 19
- 239000003990 capacitor Substances 0.000 claims description 27
- 238000004146 energy storage Methods 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 13
- 238000010992 reflux Methods 0.000 claims description 6
- 238000007726 management method Methods 0.000 description 24
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model discloses a kind of lamps and lanterns gradually bright driving circuits, including Power Entry Module, power supply output module, gradually bright control module and power management module, Power Entry Module, power management module and power supply output module to connect two-by-two；Power supply output module includes power supply output cathode end and power supply output negative pole end, and gradually bright control module is connected between power supply output cathode end and power supply output negative pole end, and power supply output negative pole end is connected with earth-return circuit；Gradually bright control module makes power supply output negative pole end be gradually turned on earth-return circuit, to gradually increase the electric current Jing Guo LED lamp, LED lamp is made to carry out gradually brighten the hair light.Therefore, gradually bright driving circuit can make LED lamp gradually be shone to the lamps and lanterns, to extend the startup time of LED lamp so that user can adapt to the variation of brightness, avoid generating dazzling sense.
Description
Technical field
The utility model is related to field of LED drive, especially a kind of lamps and lanterns gradually bright driving circuit.
Background technology
LED lamp for playing a role in lighting, it is luminous in order to be normally carried out, be typically necessary driving circuit to its into
Row driving.Existing LED lamp driving circuit is all often that will make in a short period of time when being driven to LED lamp
LED lamp shines.Since the startup time of LED lamp is very short so that the brightness of LED lamp occurs within the extreme time
Change, therefore extremely easy tos produce dazzling sense.For example, when user is when going home at night, since the eyes of user get used to low photograph
The environment of degree, therefore when user opens LED lamp, environment is transformed into bright shape within the extremely short time from dark state
State can make the eyes of user inadaptable, so as to cause dazzling sense is generated.
Utility model content
To solve the above problems, the purpose of this utility model is to provide a kind of lamps and lanterns gradually bright driving circuit, LED can be made
Lamps and lanterns are gradually shone, to extend the startup time of LED lamp so that user can adapt to the variation of brightness, avoid producing
Raw dazzling sense.
Technical solution used by the invention for solving the technical problem is：
A kind of lamps and lanterns gradually bright driving circuit, including Power Entry Module, power supply output module, for control LED lamp into
The capable gradually gradually bright control module of brighten the hair light and the power management module that power supply output is carried out for controlling power supply output module, power supply
Input module, power management module and power supply output module connect two-by-two；Power supply output module includes for connecting LED lamp
Power supply output cathode end and power supply output negative pole end, gradually bright control module be connected to power supply output cathode end and power supply output negative pole
Between end, power supply output negative pole end is connected with earth-return circuit；Gradually bright control module makes power supply output negative pole end and earth-return circuit
It is gradually turned on, to gradually increase the electric current Jing Guo LED lamp, LED lamp is made to carry out gradually brighten the hair light.
Further, gradually bright control module includes first switch group, second switch group and energy-storage module, first switch group it is defeated
Enter end and output end is connected to power supply output negative pole end and earth-return circuit, input terminal and the output end difference of second switch group
It is connected to the control terminal at power supply output cathode end and first switch group, energy-storage module is connected to power supply output cathode end and
The control terminal of two switching groups.
Further, first switch group includes the first triode, the first divider resistance and the second divider resistance, the first triode
Collector be connected with power supply output negative pole end, the emitter of the first triode is connected with earth-return circuit, second partial pressure electricity
Resistance is serially connected between the output end of second switch group and the base stage of the first triode, and the first divider resistance is connected to the first triode
Base stage and earth-return circuit between.
Further, second switch group includes the second triode, the first current-limiting resistance, the second current-limiting resistance and third current limliting electricity
Resistance, the collector of the second triode are connected by the first current-limiting resistance with power supply output cathode end, the transmitting of the second triode
Pole is connected to the base stage of the first triode by the second divider resistance, and the base stage of the second triode passes sequentially through third current-limiting resistance
It is connected to power supply output cathode end with the second current-limiting resistance, energy-storage module is connected to the second triode by third current-limiting resistance
Base stage.
Further, energy-storage module includes storage capacitor, and the positive terminal of storage capacitor is connected to by third current-limiting resistance
The negative pole end of the base stage of two triodes, storage capacitor is connected with earth-return circuit.
Further, power management module includes power management chip and switching power tube, and the power supply of power management chip is defeated
Enter end to be respectively connected with the input terminal of the output end of Power Entry Module and power supply output module, the signal of power management chip
Output end is connected to the gate terminal of switching power tube, and the drain electrode end and source terminal of switching power tube are connected to power supply output mould
Block and earth-return circuit.
Further, Power Entry Module includes fuse, power inductance and rectifier bridge, and fuse and power inductance are gone here and there successively
It is connected to the first ac input end of firewire and rectifier bridge, the second ac input end of rectifier bridge is connected with zero curve, rectifier bridge
Output end is connected with the power input of power management chip and power supply output module respectively, reflux end and the ground connection of rectifier bridge
Circuit is connected.
Further, power supply output module includes transformer, rectifier diode, filter capacitor and load resistance, two pole of rectification
Pipe is serially connected between the secondary side output end of transformer and power supply output cathode end, the secondary side reflux end of transformer and is grounded back
Road is connected, and filter capacitor and load resistance are parallel between power supply output cathode end and earth-return circuit；The primary side of transformer
Input terminal is connected with the power input of the output end of rectifier bridge and power management chip respectively, the primary side output of transformer
End is connected with the drain electrode end of switching power tube.
The utility model has the beneficial effects that：A kind of lamps and lanterns gradually bright driving circuit, it is defeated when there is power supply to be input to power supply
When entering among module, Power Entry Module power supply can be respectively transmitted to power supply output module and power management module it
In, at this point, when power management module receives power supply, power management module can export a control signal, to control
Power supply output module processed carries out power supply output；Power supply output among power supply output module is connected to due to gradually bright control module just
Extremely between power supply output negative pole end, therefore gradually bright control module it ought receive the electricity exported from power supply output cathode end
When source, gradually bright control module can work, and to the connection being gradually turned between power supply output negative pole end and earth-return circuit, make
Export from power supply output cathode end and pass through LED lamp and flow back into the electric current at power supply output negative pole end and gradually increase, due to flowing
Electric current through LED lamp is in that gradual increased mode changes, rather than moment reaches maximum current value, therefore can make LED light
Tool is gradually shone, to extend the startup time of LED lamp so that user can adapt to the variation of brightness, avoid generating
Dazzling sense.
Description of the drawings
The utility model is described in further detail with example below in conjunction with the accompanying drawings.
Fig. 1 is the circuit diagram of the lamps and lanterns gradually bright driving circuit of the utility model.
Specific implementation mode
Referring to Fig.1, a kind of lamps and lanterns of the utility model gradually bright driving circuit, including Power Entry Module 1, power supply output mould
Block 2 carries out the gradually gradually bright control module 3 of brighten the hair light and for controlling the progress power supply of power supply output module 2 for controlling LED lamp
The power management module 4 of output, Power Entry Module 1, power management module 4 and power supply output module 2 connect two-by-two；Power supply is defeated
It includes the power supply output cathode end LED+ and power supply output negative pole end LED- for connecting LED lamp, gradually bright control to go out module 2
Module 3 is connected between power supply output cathode end LED+ and power supply output negative pole end LED-, power supply output negative pole end LED- with
Earth-return circuit is connected；Gradually bright control module 3 makes power supply output negative pole end LED- be gradually turned on earth-return circuit, to gradually
Increase the electric current Jing Guo LED lamp, LED lamp is made to carry out gradually brighten the hair light.Specifically, when there is power supply to be input to power input
When among module 1, Power Entry Module 1 power supply can be respectively transmitted to power supply output module 2 and power management module 4 it
In, at this point, when power management module 4 receives power supply, power management module 4 can export a control signal, to
It controls power supply output module 2 and carries out power supply output；Since gradually bright control module 3 is connected to the power supply among power supply output module 2
Between output cathode end LED+ and power supply output negative pole end LED-, therefore ought gradually bright control module 3 it receive from power supply output just
When the power supply that extreme LED+ is exported, gradually bright control module 3 can work, to be gradually turned on power supply output negative pole end
Connection between LED- and earth-return circuit so that export from power supply output cathode end LED+ and pass through LED lamp and flow back into power supply
The electric current of output negative pole end LED- gradually increases, and the electric current due to flowing through LED lamp is in that gradual increased mode changes, without
It is to reach maximum current value moment, therefore LED lamp can be made gradually to be shone, to extend the startup time of LED lamp,
The variation for allowing users to adapt to brightness, avoids generating dazzling sense.
Wherein, referring to Fig.1, gradually bright control module 3 includes first switch group 31, second switch group 32 and energy-storage module 33,
The input terminal and output end of first switch group 31 are connected to power supply output negative pole end LED- and earth-return circuit, second switch
The input terminal and output end of group 32 are connected to the control terminal of power supply output cathode end LED+ and first switch group 31, energy storage mould
Block 33 is connected to the control terminal of power supply output cathode end LED+ and second switch group 32.Specifically, when power supply output cathode
When end LED+ is connected with power supply and carries out storing up electricity to energy-storage module 33, energy-storage module 33 is transferred to the control terminal of second switch group 32
Voltage gradually increases, and with the gradual increase of the voltage for the control terminal for being transferred to second switch group 32, second switch group 32 is gradual
First switch group 31 is connected so that the electric current for flowing through first switch group 31 gradually increases, therefore, power supply output negative pole end LED-
Electric current between earth-return circuit is in that gradual increased mode changes so that the electric current for flowing through LED lamp is also in gradually increased
Mode changes, and to enable LED lamp gradually to shine, extends the startup time of LED lamp so that user can adapt to brightness
Variation, avoid generating dazzling sense.
Wherein, referring to Fig.1, first switch group 31 includes the first triode Q2, the first divider resistance R25 and the second partial pressure electricity
Hinder R23, the collector of the first triode Q2 is connected with power supply output negative pole end LED-, the emitter of the first triode Q2 and
Earth-return circuit is connected, and the second divider resistance R23 is serially connected with the base stage of the output end and the first triode Q2 of second switch group 32
Between, the first divider resistance R25 is connected between the base stage and earth-return circuit of the first triode Q2.Specifically, work as second switch
Group 32 to the first triode Q2 base-transport conducting voltage when, the first divider resistance R25 and the second divider resistance R23 make jointly
With so that the voltage of the base stage of the first triode Q2 can keep stable, ensure that collector and the transmitting of the first triode Q2
Conducting can be stablized between pole, stablize conducting between power supply output negative pole end LED- and earth-return circuit to ensure that.
Wherein, referring to Fig.1, second switch group 32 includes the second triode Q3, the first current-limiting resistance R21, the second current limliting electricity
The collector of resistance R20 and third current-limiting resistance R22, the second triode Q3 pass through the first current-limiting resistance R21 and power supply output cathode
End LED+ is connected, and the emitter of the second triode Q3 is connected to the base stage of the first triode Q2 by the second divider resistance R23,
The base stage of second triode Q3 passes sequentially through third current-limiting resistance R22 and the second current-limiting resistance R20 is connected to power supply output cathode
LED+, energy-storage module 33 is held to be connected to the base stage of the second triode Q3 by third current-limiting resistance R22.Specifically, the first current limliting
Resistance R21 and third current-limiting resistance R22 can limit the electric current of the collector and base stage that are transferred to the second triode Q3 respectively, from
And the second triode Q3 can be protected, and the second current-limiting resistance R20 then can be to being transferred to the electric current of energy-storage module 33
It is protected, avoids immediate current excessive and burn out energy-storage module 33.When energy-storage module 33 is transferred to the base of the second triode Q3
When the voltage of pole reaches the conducting voltage of the second triode Q3, it can be led between the collector and emitter of the second triode Q3
It is logical, so as to make voltage turn-on the first triode Q2 transmitted by power supply output cathode end LED+, to keep power supply defeated
Go out between negative pole end LED- and earth-return circuit and carries out stable conducting.
Wherein, referring to Fig.1, energy-storage module 33 includes storage capacitor C15, and the positive terminal of storage capacitor C15 is limited by third
Leakage resistance R22 is connected to the base stage of the second triode Q3, and the negative pole end of storage capacitor C15 is connected with earth-return circuit.Specifically,
When power supply output cathode end LED+ carries out storing up electricity to storage capacitor C15, the fortune of electric current can occur for the inside of storage capacitor C15
It is dynamic, therefore storage capacitor C15 will present the state of conducting, and flowing through the electric current inside storage capacitor C15 at this time can be in most
Big value；Since the negative pole end of storage capacitor C15 is connected with earth-return circuit, in initial storing up electricity, it is in the second triode
The voltage of the base stage of Q3 can be less than the conducting voltage of the second triode Q3, therefore the second triode Q3 will not be by initial storing up electricity
Conducting.When electric energy inside storage capacitor C15 gradually increases, flows through its internal electric current and be gradually reduced, and storage capacitor
The voltage at the both ends C15 gradually increases, when the voltage at the both ends storage capacitor C15 is more than the conducting voltage of the second triode Q3, the
Two triode Q3 can be switched on, and with the gradual increase of storage capacitor C15 both end voltages, flow through the electricity of the second triode Q3
Stream also can gradually increase, so, acting on the voltage of the base stage of the first triode Q2 can gradually increase so that flow through the one or three pole
The electric current of pipe Q2 can gradually increase, so, LED lamp can gradually shine, to extend the startup time of LED lamp.
When the voltage at the both ends storage capacitor C15 reaches maximum, i.e., the voltage at the both ends storage capacitor C15 can maintain power supply output cathode
Hold LED+ altogether to its voltage, at this point, the electric current between power supply output negative pole end LED- and earth-return circuit can be maintained at maximum value
State, so LED lamp can steadily shine.
Wherein, referring to Fig.1, power management module 4 includes power management chip U1 and switching power tube Q1, power management core
The power input of piece U1 is connected with the input terminal of the output end of Power Entry Module 1 and power supply output module 2 respectively, power supply
The signal output end of managing chip U1 is connected to the gate terminal of switching power tube Q1, the drain electrode end and source terminal of switching power tube Q1
It is connected to power supply output module 2 and earth-return circuit.Specifically, when the power input of power management chip U1 receives electricity
When source, switching power tube Q1 can be connected in the signal output end of power management chip U1, at this point, being transmitted across by Power Entry Module 1
The power supply come can be smoothly transferred among power supply output module 2, so that power supply output module 2 can be to storage capacitor
C15 carry out storing up electricity, to realize LED lamp gradually brighten the hair light effect.
Wherein, referring to Fig.1, Power Entry Module 1 includes fuse F1, power inductance L1 and rectifier bridge DB1, fuse F1
It is sequentially connected in series in the first ac input end of firewire and rectifier bridge DB1, the second exchange input of rectifier bridge DB1 with power inductance L1
End is connected with zero curve, and the output end of rectifier bridge DB1 exports mould with the power input of power management chip U1 and power supply respectively
Block 2 is connected, and the reflux end of rectifier bridge DB1 is connected with earth-return circuit.
Wherein, referring to Fig.1, power supply output module 2 includes transformer T1, rectifier diode D5, filter capacitor C2 and load
Resistance RL, rectifier diode D5 are serially connected between the secondary side output end of transformer T1 and power supply output cathode end LED+, transformation
The secondary side reflux end of device T1 is connected with earth-return circuit, and filter capacitor C2 and load resistance RL are parallel to power supply output cathode end
Between LED+ and earth-return circuit；The primary side input terminal of transformer T1 respectively with the output end of rectifier bridge DB1 and power management core
The power input of piece U1 is connected, and the primary side output end of transformer T1 is connected with the drain electrode end of switching power tube Q1.Tool
Body, when among power delivery to transformer T1, the primary side output end of transformer T1 can be power delivery to switch power
The drain electrode end of pipe Q1, at this point, when switching power tube Q1 is connected in the signal output end of power management chip U1, by transformer T1's
The power supply that primary side output end is exported can pass sequentially through the drain electrode end and source terminal of switching power tube Q1, to be transferred to ground connection
Among circuit, at this point, the primary side of transformer T1 forms an electric power loop, so the secondary side of transformer T1 can incude production
Raw power supply, to realize the function of subsequent LED lamp gradually brighten the hair light.
Be above to the utility model it is preferable implementation illustrated, but the utility model be not limited to it is above-mentioned
Embodiment, those skilled in the art can also make various be equal without departing from the spirit of the present invention
Deformation is replaced, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (8)
1. a kind of lamps and lanterns gradually bright driving circuit, it is characterised in that：Including Power Entry Module (1), power supply output module (2), use
The gradually gradually bright control module (3) of brighten the hair light is carried out in control LED lamp and carries out electricity for controlling the power supply output module (2)
The power management module (4) of source output, the Power Entry Module (1), power management module (4) and power supply output module (2)
It connects two-by-two；The power supply output module (2) includes that power supply output cathode end (LED+) for connecting LED lamp and power supply are defeated
Go out negative pole end (LED-), the gradually bright control module (3) is connected to power supply output cathode end (LED+) and power supply output is negative
Extremely between (LED-), power supply output negative pole end (LED-) is connected with earth-return circuit；The gradually bright control module (3)
Power supply output negative pole end (LED-) is set to be gradually turned on earth-return circuit, to gradually increase the electric current Jing Guo LED lamp,
LED lamp is set to carry out gradually brighten the hair light.
2. a kind of lamps and lanterns according to claim 1 gradually bright driving circuit, it is characterised in that：The gradually bright control module (3)
Including first switch group (31), second switch group (32) and energy-storage module (33), the input terminal of the first switch group (31) and
Output end is connected to power supply output negative pole end (LED-) and earth-return circuit, the input terminal of the second switch group (32) and
Output end is connected to the control terminal at power supply output cathode end (LED+) and first switch group (31), the energy-storage module (33)
It is connected to the control terminal at power supply output cathode end (LED+) and second switch group (32).
3. a kind of lamps and lanterns according to claim 2 gradually bright driving circuit, it is characterised in that：First switch group (31) packet
Include the first triode (Q2), the first divider resistance (R25) and the second divider resistance (R23), the collection of first triode (Q2)
Electrode is connected with power supply output negative pole end (LED-), and the emitter of first triode (Q2) is connected with earth-return circuit,
Second divider resistance (R23) is serially connected with the base of the output end and first triode (Q2) of the second switch group (32)
Between pole, first divider resistance (R25) is connected between the base stage and earth-return circuit of first triode (Q2).
4. a kind of lamps and lanterns according to claim 3 gradually bright driving circuit, it is characterised in that：Second switch group (32) packet
The second triode (Q3), the first current-limiting resistance (R21), the second current-limiting resistance (R20) and third current-limiting resistance (R22) are included, it is described
The collector of second triode (Q3) is connected by first current-limiting resistance (R21) with power supply output cathode end (LED+),
The emitter of second triode (Q3) is connected to first triode (Q2) by second divider resistance (R23)
The base stage of base stage, second triode (Q3) passes sequentially through third current-limiting resistance (R22) and the second current-limiting resistance (R20) connection
In power supply output cathode end (LED+), the energy-storage module (33) is connected to described by the third current-limiting resistance (R22)
The base stage of two triodes (Q3).
5. a kind of lamps and lanterns according to claim 4 gradually bright driving circuit, it is characterised in that：The energy-storage module (33) includes
The positive terminal of storage capacitor (C15), the storage capacitor (C15) is connected to described by the third current-limiting resistance (R22)
The negative pole end of the base stage of two triodes (Q3), the storage capacitor (C15) is connected with earth-return circuit.
6. a kind of lamps and lanterns according to claim 1 gradually bright driving circuit, it is characterised in that：The power management module (4)
Including power management chip (U1) and switching power tube (Q1), the power input of the power management chip (U1) respectively with institute
The output end for stating Power Entry Module (1) is connected with the input terminal of the power supply output module (2), the power management chip
(U1) signal output end is connected to the gate terminal of the switching power tube (Q1), the drain electrode end of the switching power tube (Q1) and
Source terminal is connected to the power supply output module (2) and earth-return circuit.
7. a kind of lamps and lanterns according to claim 6 gradually bright driving circuit, it is characterised in that：The Power Entry Module (1)
Including fuse (F1), power inductance (L1) and rectifier bridge (DB1), the fuse (F1) and power inductance (L1) are sequentially connected in series
In the first ac input end of firewire and the rectifier bridge (DB1), the second ac input end and zero curve of the rectifier bridge (DB1)
It is connected, the output end of the rectifier bridge (DB1) is defeated with the power input of the power management chip (U1) and power supply respectively
Go out module (2) to be connected, the reflux end of the rectifier bridge (DB1) is connected with earth-return circuit.
8. a kind of lamps and lanterns according to claim 7 gradually bright driving circuit, it is characterised in that：The power supply output module (2)
Including transformer (T1), rectifier diode (D5), filter capacitor (C2) and load resistance (RL), rectifier diode (D5) string
It is connected between the secondary side output end of the transformer (T1) and power supply output cathode end (LED+), the two of the transformer (T1)
Secondary side reflux end is connected with earth-return circuit, and the filter capacitor (C2) and load resistance (RL) are parallel to power supply output cathode end
(LED+) between earth-return circuit；The output with the rectifier bridge (DB1) respectively of the primary side input terminal of the transformer (T1)
End be connected with the power input of the power management chip (U1), the primary side output end of the transformer (T1) with it is described
The drain electrode end of switching power tube (Q1) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820191512.4U CN207911076U (en) | 2018-02-01 | 2018-02-01 | A kind of lamps and lanterns gradually bright driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820191512.4U CN207911076U (en) | 2018-02-01 | 2018-02-01 | A kind of lamps and lanterns gradually bright driving circuit |
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| Publication Number | Publication Date |
|---|---|
| CN207911076U true CN207911076U (en) | 2018-09-25 |
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ID=63562012
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820191512.4U Expired - Fee Related CN207911076U (en) | 2018-02-01 | 2018-02-01 | A kind of lamps and lanterns gradually bright driving circuit |
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| CN (1) | CN207911076U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109688668A (en) * | 2019-03-06 | 2019-04-26 | 浙江雨林电子科技有限公司 | It is a kind of to make LED light gradually bright driving power |
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2018
- 2018-02-01 CN CN201820191512.4U patent/CN207911076U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109688668A (en) * | 2019-03-06 | 2019-04-26 | 浙江雨林电子科技有限公司 | It is a kind of to make LED light gradually bright driving power |
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Granted publication date: 20180925 |